Home / 7,165.29-9,888.55-4,140.54

Finding the Fourth Proportional to 7,165.29, 9,888.55 and 4,140.54

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Solution

The fourth proportional to 7,165.29, 9,888.55 and 4,140.54 is: 5,714.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,165.29 : 9,888.55 = 4,140.54 : x
  2. Step 2: Convert to fraction form
    7,165.29/9,888.55 = 4,140.54/x
  3. Step 3: Cross multiply
    7,165.29x = 9,888.55 × 4,140.54
  4. Step 4: Simplify right side
    7,165.29x = 40,943,936.82
  5. Step 5: Solve for x
    x = 40,943,936.82/7,165.29
  6. Step 6: Final answer
    x = 5,714.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.